Answer to the Friday Puzzle….

If you have not tried to solve it, have a go now. For everyone else the answer is after the break.

The next row is
1113213211

From the second line onwards, every line describes the line before it in words…..

One One
Two Ones
One Two One One
etc.

Did you solve it?

I have produced an ebook containing 101 of the previous Friday Puzzles! It is called PUZZLED and is available for the Kindle (UK here and USA here) and on the iBookstore (UK here in the USA here). You can try 101 of the puzzles for free here.

In order for the number ‘4’ to appear in the sequence, there needs to be four in a row of a particular number, ‘N’, and the string in the relevant line would have to contain “4 Ns” in a row. This can’t happen as each string in the sequence is made up of bits of length 2 numbers (number of/number) and it is impossible for two adjacent bits to be of the same number.

Judging by the small number of comments compared to other puzzles I guess that not many people got the answer. That would include me as I haven’t the foggiest what’s going on despite having a B.Sc. in Mathematical Sciences. Mind you I am very very rusty as it was 20 years ago now. I wasn’t that good either but I enjoyed it none the less.